Work-around:
1.disable adirarelocations addon
2.go back and re-import data in gathermate2 & clean up data base, result = success
3.logout, and enable adirarelocations
4.good until next time data is imported into gathermate2

What is the expected output? What do you see instead?
not to get the error message. to be able to import & clean up the database without disabling addon.

What version of the product are you using?
1.0.1-3-g1aed275

Do you have an error log of what happened?
no. just an error message received on-screen. nothing appears in the error log unfortunately.

1.0.1-3-g1aed275
Do you have an error log of what happened?
-+ no. just an error message received on-screen. nothing appears in the error log unfortunately.
Please provide any additional information below.